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DMARC Record Checker
Enter any domain to fetch and explain its DMARC DNS record. DMARC builds on SPF and DKIM to tell receiving servers what to do when authentication fails.
What is DMARC?
DMARC (Domain-based Message Authentication, Reporting and Conformance) is an email authentication protocol that uses SPF and DKIM to detect and prevent email spoofing. It also instructs mail servers what to do when an email fails authentication checks.
DMARC policies explained
- p=none — Monitor mode. No action taken, but reports are sent. Good starting point.
- p=quarantine — Failing emails go to the spam folder.
- p=reject — Failing emails are completely rejected. Maximum protection.
Recommended setup path
Start with p=none to collect reports without affecting deliverability. After reviewing reports for 2–4 weeks, move to p=quarantine, then p=reject.